Yellow filter

Originally Posted by Dawg Pics

I guess I am confused now. Yellow filter helps with contrast, no?

When I shot all b&w (Plus-X and Tri-X) in the mid-1970s, I used to keep a yellow filter mounted almost always because I liked the contrast it offered, but as Brent suggested, I should have occasionally given it a rest. My (junior college) photography teacher suggested trying a red filter for even more contrast, but it made every outdoor shot appear that a violent thunderstorm was impending.